文件上传

• 导入依赖

  <dependency>
    <groupId>commons-fileupload</groupId>
    <artifactId>commons-fileupload</artifactId>
    <version>1.3.1</version>
  </dependency>
  <dependency>
    <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.4</version>
  </dependency>

• 在配置文件中配置文件解析器

      <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver" >
          <property name="maxUploadSize" value="10485760"/>
      </bean>

• 后端控制器

  @Controller
  public class HelloController {
      @RequestMapping(path = "/upload")
      public String uploadTest(HttpServletRequest request, MultipartFile upload) throws Exception {
          {
              System.out.println("SpringMVC方式的文件上传...");
                          // 先获取到要上传的文件目录
              String path = request.getSession().getServletContext().getRealPath("/uploads");                         // 创建File对象，一会向该路径下上传文件
              File file = new File(path);
                      // 判断路径是否存在，如果不存在，创建该路径
              if (!file.exists()) {
                  file.mkdirs();
              }
                      // 获取到上传文件的名称
              String filename = upload.getOriginalFilename();
              String uuid = UUID.randomUUID().toString().replaceAll("-", "").toUpperCase();                          //把文件的名称唯一化
              filename = uuid + "_" + filename;
                          // 上传文件
              upload.transferTo(new File(file, filename));
              return "success";
          }
      }
  }

跨服务器上传

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